12620214640 has 40 divisors (see below), whose sum is σ = 32009455728. Its totient is φ = 4589168640.

The previous prime is 12620214631. The next prime is 12620214643. The reversal of 12620214640 is 4641202621.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 12620214599 and 12620214608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12620214643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7169697 + ... + 7171456.

Almost surely, 2^12620214640 is an apocalyptic number.

12620214640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12620214640 is an abundant number, since it is smaller than the sum of its proper divisors (19389241088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12620214640 is a wasteful number, since it uses less digits than its factorization.

12620214640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14341177 (or 14341171 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 12620214640 in words is "twelve billion, six hundred twenty million, two hundred fourteen thousand, six hundred forty".